Shazia Bashir¹, Meenakshi Samartha^1,

Of the globe’s total water resources, less than three percent is fresh water. Fresh water for human consumption is a fragile and finite source and is a critical component of the global environment. Water is called the "universal solvent” because it dissolves more substances than any other liquid. Water quality of a lake is the reflection of the physio-chemical properties of water, the clearer the water, the more it will reflect the light and the higher the intensity the scattered light, the higher will be the turbidity. Water resources are equally important for all forms of life& without good water quality life is impossible. Fresh water is a critical, finite, vulnerable, renewable natural resource on the earth and plays as important role in our living environment. More than 70% of the Earth's surface is covered by water. The result of our study showed that there was no significant difference in the surface water temperatures of the four sampling sites. Ph of sampling site 1 was lower than the S1, S2 and S3. Dissolved oxygen (DO) was same at all sites while as free carbon dioxide showed slight difference at site 1, which was higher than S1, S2 and S3.The analysis of physicochemical variables of water samples collected from the four selected sites of Upper Lake revealed that Site I showed conspicuous significant differences in the various parameters analyzed.

water parameters, temperature, pH., hardness